First, check that you have an eligible recording
This workflow applies to an existing local Udio recording you are permitted to use. Udio's official partnership notice says downloads are disabled, as checked September 4, 2026. Do not assume you can export a new file or paste a Udio link into AudioChords. With a suitable MP3 already available, treat conflicting chord labels as questions about the sound. A sustained pad, an active bass, and a moving vocal may emphasize different notes at different moments. Agreement between tools would not by itself prove a transcription, and disagreement does not tell you which tool is right.
Ask what the chart is for
A detailed harmonic analysis and a rehearsal chart do not always need the same level of specificity. A layered recording might combine a simple triad, a sustained vocal note, and a moving bass. One listener may describe the combined sound with an extended chord while another names the accompaniment and treats the vocal separately. Before correcting an unusual detected symbol, decide whether you need to recreate that full color or simply support the melody on one instrument.
Reduce the sound to stable evidence
Listen after the attack, when passing notes and percussion are less distracting. Identify a stable bass pitch and any clearly sustained chord tones. Try the simpler triad first, then add the suspected seventh, suspension, or extension. Listen for a meaningful improvement rather than assuming a longer name is more accurate. In AudioChords, edit the label when you have a defensible working choice. Keep a separate note if the sound remains genuinely ambiguous, especially when an effect or overlapping line obscures the pitches.
Choose a version that survives rehearsal
Play the candidate voicing in context with the preceding and following chords. Then sing the melody over it without the recording. An accompaniment can be harmonically reasonable yet poorly spaced for a particular voice or instrument. Move a clashing upper note to another register before abandoning the chord altogether. If a simpler version works better for your arrangement, use it consciously and revisit the fuller color later. Avoid filling a chart with speculative symbols that slow every rehearsal. The practical standard is a consistent part that supports the phrase, while your notes preserve what is known and what still needs checking.
Compare two readings of the same moment
Suppose an invented passage contains A in the bass with C, E, and G above it. Am7 describes all four notes, while C describes the upper triad but leaves out the bass relationship. A simplified C accompaniment might still be playable in some settings, but that does not make the descriptions identical. Play the upper notes first, then add the low A and listen to the change in weight. Next replay the surrounding phrase. If A is only a brief passing event rather than a sustained foundation, you may choose a different practical label. Open Music Theory's triad and seventh-chord reference explains the note-group distinction; your source audio determines whether those notes are actually present.
A useful decision when certainty is unavailable
Make a short note containing the location, competing labels, and the strongest audible clue. Choose a provisional accompaniment that does not clash with the melody, and keep that choice separate from a claim about the exact recording. If a chord appears only during a wash of reverb, compare an earlier attack or a clearer repetition. Do not report an accuracy percentage from a handful of personal examples. If you need exact inner voices for a formal arrangement, a broad chord label is insufficient and further transcription work is required. For rehearsal, a documented uncertainty is safer than a confident but untested change that sends the band in a different direction.